Gas-stove



(No Model.)

J. W. BAKER..

- GAS STOVE. No. 349,779. Patented Sept. 28, 1886.

i *1 m I Q WITNESSES:

an ytww INVENTOR UNITED STATES,

PATENT OFFICE;

JQHN W. BAKER, OFPHILADELPHIA, PENNSYLVANIA. v

GAS-STOVE.

SPECIFICATION forming part of Letters Patent No. 349,779, datedSeptember 28, 1886. Application filed May 27. 1885. Serial No. 166,811.(No model.)

To all whom it may concern:

Be it known that 1, JOHN W. BAKER, a citizen of the United States,residing in the city of Philadelphia, State of Pennsylvania, haveinvented certain new and useful Improvements tical gas-tubes having jetsat or about the terminus of said flue, andfor which I have filedapplication for Letters Patent on the 5th day of December, 1884, beingSerial No. 149,548; and my present invention consists in an improvementtherein by the combination, with said central flue, of a hot-air fluelocated within the same, and communicating through the base thereof withthe open air, and extending upward to the top of the stove through thedraftchi'mney located above said central flue.

In the accompanying drawings, Figure 1 is a vertical section showing therelative arrangement of the several parts of my improved stove; Fig. 3,a vertical section of the gasburning apparatus in the stove, and Fig. 2a top view thereof.

Suitably mounted upon a frame (indicated at A) is an annular ring ordrum, B, connected air-tight with a like upper annular ring or drum, 0,by means of a series of upright radiating flue-tubes, D I), placedbetween them, and within the space formed by the series of tubes D D issupported a gas-burning apparatus, (shown in Figs. 2 and 3,) consistingof a central flue-chamber, F, closed at its base, except as hereinaftermentioned, and communicating air-tight with the lower drum, B, by meansof flue-tubes E E. A series of gastubes, J J, lead from a gas-chamber,L, and are arranged vertically around the central flue,

-F, extending up to about the top thereof. A

chimney, M, preferably of funnel shape, fits closely within the centralcircular space formed by the shapeof the upper annular ring-or drum, 0,and is supported thereby, extending downward from the top thereof to theregion of the gas-j ets, and being large enough in diameter at thatpoint to form an annular space between it and the circular series ofgas-jets, so that a current of air will be induced to that point frombelow, and there mingle with the gas issuing from the tubes J. Thecentral flue, F, is open at its top and closed at its base, except for aflanged opening, (indicated at n,) upon which is supported an uprighthot-air'fiue, S, open at both ends and smaller in diameter than saidcentral flue,F, fitting air-tight in said flanged opening, andconstrueted,preferably,of some refractory material. Gas is suppliedthrough the tube K at the base of the stove to the gas-chamber L. I

The operation is as follows: The gas which proceeds upward to the jetsat the top of the gas-tubes J J is there ignited, when the heat producedthereby will cause an upward current of air to the region of the jets.The draftpip'e G, leading to the chimney and connected with the upperdrum, 0, constitutes a draft-connection for the products of combustionof the ignited gas and air,.which are drawn downward through the centralflue, F, to the lower drum, B, thence upward through the series ofupright flue-tubes D to the upper drum, 0, and thence to the chimneyvthrough the pipe G. It is apparent that the central'flue, F, will bethereby highly heated, and that in consequence the gas in thesurrounding tubes J will be heated and expanded before reaching the jetsand the point of ignition. In like manner the upward current of airinduced to the region of the gas-jets by means of the chimney M will beheatedand expanded by contact with the surrounding hot surfaces beforereaching that point, and there mingle with the heated gas at the terminiof the gas-tubes and be ignited therewith. Again,in like manner the hotproducts of combustion passing downward through said central flue, F,will impart great heat to the hot-air flue S within said central flue,and will induce a eurrentof air upward through the said hot-air flue S,from the top of which such air (which will be highly heated in itsupward passage through the same) maybe ICO connecting the same, acentral combustion flue-' chamber, F, arranged and supported betweensaid drums and connected air-tight therewith at its base, a gas-chamber,and a series of gastubes, J J surrounding said flue-chamber F, andextending to the top thereof, or nearly so,

a chimney, M, supported by and located at its top within the said upperannular drum, (J,

- structed, combined, and arranged substantially and extending down tothe region of the gasjets, whereby a current of air is induced thereto,and avertical hot-air flue, S, within said flueehamber .F, and connectedtherewith by a flanged opening therein at its base, and extendingupwardto the top of said upper annular drum, 0, or nearly so, the saidparts being con- 5 as set forth.

In testimony whereof I have hereunto affixed my signature this 29th dayof April, A. D. 1885.

J OI-IN V. BAKER.

Witnesses:

FRANCIS S. BROWN, HVT. FEN'roN.

